CameraITS: Just check the flash state.

For still capture image, just check the flash state being fired.

Change-Id: Ie89286af1823d083196bc8e77e87583460ca8841
diff --git a/apps/CameraITS/tests/scene2_a/test_auto_flash.py b/apps/CameraITS/tests/scene2_a/test_auto_flash.py
index b20da2d..ab6e98f 100644
--- a/apps/CameraITS/tests/scene2_a/test_auto_flash.py
+++ b/apps/CameraITS/tests/scene2_a/test_auto_flash.py
@@ -184,8 +184,7 @@
       logging.debug('AE_STATE (cap): %s', ae_state)
       flash_state = FLASH_STATES[metadata['android.flash.state']]
       logging.debug('FLASH_STATE: %s', flash_state)
-      # FLASH_REQUIRED and FLASH_FIRED
-      if ae_state == 'FLASH_REQUIRED' and flash_state == 'FLASH_STATE_FIRED':
+      if flash_state == 'FLASH_STATE_FIRED':
         logging.debug('Flash fired')
         flash_fired = True
         flash_exp_x_iso = exp*iso